PLH53-10 Epoxy MIO Intermediate Coating

Epoxy MIO intermediate coating (2K) for barrier protection in cathodic-protection coating systems.

Used with PLH53-35 epoxy zinc primer as a supporting intermediate coat.
Salt water resistance: 20 days (as stated).
Mixing ratio 8:1 (by weight); recommended DFT 60–90 µm per coat.

PLH53-10 Epoxy MIO Intermediate Coating Description

Overview

PLH53-10 Epoxy MIO Intermediate Coating is a two-component, polyamide-cured epoxy micaceous iron oxide (MIO) intermediate coating modified with special C6-element material (sp2 hybridization).

The product is formulated with epoxy resin, micaceous iron oxide powder, anti-settling agent, toughening agent, and solvent, and is modified with special C6-element material (sp2 hybridization). It is supplied as two components with a polyamide curing agent.

Key Benefits

Two-component, polyamide-cured epoxy MIO intermediate coating
Specified for use with epoxy zinc primer as a supporting coat
Combines cathodic protection synergy with barrier performance for corrosion protection
Can be applied by airless spray, brush, or roller
Salt water resistance: 20 days
Compatible with polyurethane topcoat and fluorocarbon topcoat systems

Recommended Uses

This intermediate coating is suitable for steel protection projects in industrial and marine environments.

Typical application areas

Ship repair/building
Bridges
Petrochemical facilities
Steel structures
Offshore platforms
Underwater steel structures
Pipelines
Oil tanks
Cathodic-protection coating systems

Application Guide

Item	Details
Mixing Ratio (A:B)	8:1 (by weight)
Induction Time	5 min
Pot Life	4 h
Application Methods	Airless spray, brush, roller
Thinner / Cleaner	X-7 epoxy thinner
Typical Dilution	2–8% (air spray/roller may require more)
Recoat Interval / Overcoating Interval (25°C)	Minimum 24 h; maximum 7 days
Recommended DFT	60–90 µm per coat (brush/roller: 35–50 µm per coat)

Surface Preparation

When applied over a two-component primer, all surfaces must be clean, dry, and free of contaminants; if the maximum recoat interval is exceeded, surface roughening is required. If used directly as the first coat, abrasive blasting to Sa 2.5, or power-tool cleaning to St 3; surface profile 30–75 µm.

Technical Data

Item	Value
Product Type	Two-component, polyamide-cured epoxy micaceous iron oxide (MIO) intermediate coating
Appearance / Color	Gray
Theoretical Consumption	0.14 kg/m² at 50 µm DFT (losses not included)
Density / Specific Gravity	1.53 kg/L
Drying / Curing (25°C)	Touch dry 1 h; hard dry 24 h; full cure 7 days
Salt Water Resistance	20 days
Packaging	Part A 27 kg; Part B 3 kg
Shelf Life	12 months

Storage
Store in a dry, cool, ventilated warehouse away from fire sources and direct sunlight; outdoor storage is not permitted.

System Compatibility

This intermediate coating is compatible with polyurethane topcoat, fluorocarbon topcoat, etc.

Frequently Asked Questions

What is this intermediate coating used for?
This intermediate coating is used as a supporting coat in cathodic-protection coating systems and for corrosion protection on steel substrates.

What coating system is it specified for?
It is specified for use with epoxy zinc primer as a supporting coat.

What application methods are recommended?
The product can be applied by airless spray, brush, or roller.

What is the recommended recoat interval?
The minimum recoat interval is 24 h at 25°C, and the maximum recoat interval is 7 days.

What surface preparation is required before application?
When applied over a two-component primer, all surfaces must be clean, dry, and free of contaminants; if the maximum recoat interval is exceeded, surface roughening is required. If used directly as the first coat, abrasive blasting to Sa 2.5, or power-tool cleaning to St 3; surface profile 30–75 µm.

What topcoats are compatible with this intermediate coating?
It is compatible with polyurethane topcoat, fluorocarbon topcoat, etc.

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